1-1/2" PVC rough-in partially complete, will catch both the sink and this shower, the drain vent will be located underneath the sink area. The shower flooring will be laid on a slope on both sides leading to the floor drain.
Ran out of enough scrap long enough to complete this entire fill in, so I must piece the flooring together. No worries...fiberglass cloth tape. I left about 1" lip on the vertical panel above the floor to prevent runout of water.
Did you ever see the high tech manner in which I designed the ceiling height and spacing needed inside the shower space. Check out that high-tech shower design method